AUDIO AND VISUAL SYSTEM (w/o Navigation System) Sound Signal Circuit between Radio Receiver and Multi-media Interface ECU

DESCRIPTION

The multi-media interface ECU sends sound signals to the radio receiver assembly through this circuit.

If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier assembly, radio receiver assembly or speakers.

WIRING DIAGRAM

A0095HRE05

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - RADIO RECEIVER)


    1. Disconnect the H33 multi-media interface ECU connector.

    2. Disconnect the H36 radio receiver assembly connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H33-2 (URO+) - H36-2 (CDR+) Always Below 1 Ω
      H33-3 (URO-) - H36-3 (CDR-) Always Below 1 Ω
      H33-4 (ULO+) - H36-4 (CDL+) Always Below 1 Ω
      H33-5 (ULO-) - H36-5 (CDL-) Always Below 1 Ω
      H33-1 (USD1) - Body ground Always 10 kΩ or higher
      H33-2 (URO+) - Body ground Always 10 kΩ or higher
      H33-3 (URO-) - Body ground Always 10 kΩ or higher
      H33-4 (ULO+) - Body ground Always 10 kΩ or higher
      H33-5 (ULO-) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here